Sign holder



FIG. 1 is a front elevational view of a sign holder showing my new design;

FIG. 2 is a back elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a side elevational view thereof, the opposite side being a mirror image;

FIG. 6 is a perspective view thereof; and

FIG. 7 is an exploded perspective view thereof with a sign shown in broken lines for illustrative purposes. 

The ornamental design for a sign holder, as shown and described. 